Machine



(No Model) I 3-SheetsSheet Q I O.'P.'BRIGGS.

NUT REAMING MAGHINE.

No. 556,084. Patented Mar. 10, 1896.

AN DREW EGRAHAM, PHOTU-UTHQWASHINGTON. D (Iv OJP. BRIGGS. NUT REAMI NG MAGHINE.

3 SheetsSheet 2.

N 0.' 5.56,084. Patented MaYrLIO, 1896.

(No Model.) 3 Sheets-Sheet 3.

0. P. BRIGGS. NUT REAMING MACHINE.

wine/5s 68- ANDREW B.GRANAM. Pum'o-umawAsums'mn D C UNITED STATES- PATENT OFFICE.

ORLANDO P. BRIGGS, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE NVESTERN ELECTRIC COMPANY, OF SAME PLACE.

NUT-REAMING MACHINE.

SPECIFICATION forming part of Letters Patent No. 556,084, dated March 10, 1896.

Application filed January 25,1895. Serial No. 536,177. (No model.)

To all whom it may concern:

Be it known, that I, ORLANDO P. BRIGGS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Nut-Beaming Machines, (Case No. 11,) of which the following is a full, clear, concise, and exact description,reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to a nut-reaming machine, my object being to construct a machine whereby the nuts to be reamed may be automatically fed to the machine, reamed, and then ejected therefrom.

In the preferred form the machine of my invention comprises a board or table upon which are placed the nuts to be reamed, a guideway being provided leading from the table, through which guideway the nuts are adapted to be passed in a row to the reaming mechanism; A feedingdisk is provided, adapted in its rotation to engage the nuts in the guideway and move the same forward. A finger moving at intervals across the guideway advances the nut to be reamed to a position between a pair of jaws, the jaws being carried upon carriages moved back and forth byapair of cam-wheels. The nut to be reamed being clamped between the jaws, rotating reaming-tools are brought into contact with the opposite sides of the nut to ream the same. The spindles carrying the reaming-tools are splined in rotating sleeves, longitudinal move ment of the spindles being thus permitted. Upon the spindles are provided collars adapted to be engaged by cam-actuated levers to impart longitudinal movement to the spin-v moving longitudinally the spindles carrying the reaming-tools. Fig. 5 is a detail view on line 5 5, Fig. 1, looking in the direction of the arrows. Fig. 6 is a similar view looking against the arrows. Fig. 7 is a detail view of one of the'carriages that carry the clamping-jaws. Fig. 8 is a longitudinal sectional view of the lower spindle and its bearing.

Fig. 9 is a sectional view on line 9 9, Fig. 8.

Fig. 10 is a sectional view of the upper spindle and its bearing.

Like letters refer to like parts throughout the different figures.

Upon the shaft to is provided a pulley a adapted to be driven bya belt a Upon the shaft to is mounted a worm a adapted to engage a worm-wheel I) mounted upon a shaft 12. Upon the opposite ends of the shaft 1) are provided cam-wheels c d provided in their peripheries with cam-grooves o and cl, respectively. Cam-rollers c d are adapted to engage the grooves c d, the rollers being mounted, respectively, upon sliding carriages 0 (F, the carriages carrying upon their 0pposed ends jaws 0 (1 between which the nut eto be reamed is adapted to be clamped. As the cam-wheels c (I thus rotate, the rollers 0 (1 following the paths of the grooves, impart movement to the carriages 0 d causing the same to alternately approach and recede, to clamp and release the nut.

Upon one of the cam-wheels c is provided a series of pins ff, adapted to engage the oblique walls 9 g of a block g carried upon a lever g pivoted at g and carrying upon its opposite end a rack g adapted to engage a pinion h mounted to rotate with a feedingdisk h, which may be made of leather, and provided upon its periphery with teeth whereby it may readily engage the nuts to be reamed and feed the same forward through the guideway. To the end of lever g carrying the block g is secured a spring g which tends to depress the end of the lever to which said spring is secured.

As seen in Fig. 3, the wheel 0 is rotating in a clockwise direction, and one of the pins, as f, engages the wall g of block g, thus raising the end of the lever and moving the rackg downward. The pinion h is connected wit-h the feeding-disk h by means of a pawl-andratchet device, which will be hereinafter described, so that the descent of rack does not impart motion to the disk It. Upon the passage of pin f past the edge g of block g the spring 9 reacts to depress the end of lever g, thus elevating the rack g and rotating the pinion h to thereby rotate the feeding-disk 71/. In the descent of the end of lever g the pin frides upon the edge g of block g, thus producing a gradual downward movement of the end of the lever. Shortly after the pin f has engaged and moved the lever g the next pin engages the walls of block g and the movement is repeated.

Figs. 5 and (3 illustrate in detail the pawland-ratchet device connecting the pinion h with the feeding-disk h. The feeding-disk h is mounted to rotate with the shaft 7L2, upon which shaft is keyed a plate or disk h carrying a pawl if. The pinion his mounted loosely upon the shaft 7L2 and carries a ratchetwheel 7L5 adapted to be engaged by said pawl 71. Vhen the rack g is elevated pinion h is rotated clockwise, as seen in Fig. 5, the teeth of ratchet-wheel 7L thus engaging pawl 7L4 carried upon disk 7b3 to rotate the shaft 7L2, and with it the feeding-disk h. When, however, the rack g moves downward, the pinion 71. is rotated contraclockwise, the pawl 71/ thus riding over the teeth of ratchet-wheel 7L5 without receiving motion therefrom. Upon the shaft I) is mounted a cam-wheel 7c, upon the periphery of which a roller is adapted to bear, said roller being carried upon the end of a bell-crank k pivoted at 70 the opposite end of said bell-crank engaging with a collar Z mounted upon spindlel carrying the reaming-tool Z A second bell-crank 7.5 pivoted at engages by its shorter end a tongue 71: carried upon the end of bell-crank kawhereby the movement of cam-roller It also swings the bell-crank it upon its pivot. The opposite end of the bell-crank 10 engages a collar m carried upon the spindle m that supports the reaming-tool m The longer arms of the bell-cranks k and 713 are connected by the spring 75, which draws said arms toward one another, tending to thrust the roller 7a to the right (see Fig. 3) and approach the reamingtools Z m As the cam-wheel 70 rotates in a clockwise direction, as seen in Fig. 3, the cam-roller la is engaged by one of the projections k upon the wheel 70, thus moving the roller 7; outward and separating the reaming-tools. As the wheel 70 continues its rotation the roller 70' moves gradually to the right, due to the reaction of spring 70 the reaming-tools being thus gradually brought toward one another until the next of the projections is upon the wheel it engages the cam to move it again to the left, the reaming-tools being thus alternately brought toward one another and separated again. Upon the shaft a is provided a bevel-gear n adapted to engage a bevel-gear n mounted upon a shaft 01 "which carries upon its opposite end a gear-wheel a meshing with a gear-wheel n mounted upon a sleeve a rotating in a bearing M. The spindle 'm is splined to the sleeve 01 by key m, thus permittinglongitudinal movement of the spindle relatively to the sleeve. The bevel.- gear n is also provided with teeth meshing with a bevel-gear a mounted upon a sleeve n" rotating in a hearing it The spindle Z is splined to the sleeve n by a key Z, which permits the longitudinal movement of the spindle relatively to said sleeve a".

The means for maintaining the reamingtools in position are illustrated in Figs. 8 and 9. Within the spindle Z is provided a rod 0, adapted to be moved longitudinally by a screw 0, which carries a collar 0 adapted to be held between the end of the spindle and the cap 0 screwed upon the end thereof, the screw 0 being provided with a head 0" extending through the cap 0 whereby the screw may be rotated. To the end of the rod 0 is secured the reaming-tool Z the reaming-tool fitting in a channel provided in the holder 0 fitting in the end of the bore of the spindle Z.

Upon the carriage (l is provided a slide 1), to which is pivoted one end of a lever 11, pivoted at p the opposite end of said lever 1') engaging a pin or bolt 19 carried upon a carriage 19'. Upon the carriage p is provided a finger 11", which, as the carriage p is advanced, engages and moves the nuts to be reamed toward the position between the jaws c (1*. In order to render the finger 1) yielding, the slide 13 is provided at the end with a downward extension 19, through which passes a rod 197 mounted upon the carriage d", said rod being surrounded by a coiled spring 1),

one end of which rests against the end of carriage d, while the opposite end rests against said extension 19 Should the finger 19" meet an unyielding resistance, the spring 1) yields to the pressure, thus preventing the breakage of any of the parts.

A feeding-plate r is provided upon the machine, having its surface flush with the floor of guidewayr', so that nuts placed upon said plate 0* may be passed to said guideway. To the side of said plate 9' is provided a feeding board 1' the surface of which is raised above the surface of plate '2", the edge 1' of board 0' forming a wall flush with the wall of guideway '1'. The nuts to be reamed are placed upon board W, from which a few of the nuts are brushed onto plate r, after which bymeans of a block 7 which may be moved over the face of plate 7', the nuts may be brought into line against the wall 0' and advanced into the guideway r. The guideway r is of such width as to permit the passage of the nuts only when lying with the lesser dimension between the walls of the guideway, the nuts being arranged in line in this position against wall 0' by means of block W. The nuts pass- IIO ' ing into guideway r are engaged and moved forward by the feeding-disk h. As the camwheels 0 d rotate to separate the jaws 0 d clamping the nut which has just previously been reamed, the finger 19 carried upon the carriage p is thrust forward, thus engaging and advancing the nuts in the guideway r and thrusting from the end of the guideway the nut that has just previously been reamed and released by the jaws 0 01 the nut falling into a receptacle which may be provided for the same. Upon the frame of the machine is mounted a shield m, which prevents the nuts and chippings from falling upon the bevelgears. The spindle Z moves freely through an opening provided in said shield. The further rotation of the cam-Wheels c d approaches the jaws c d, which engage and maintain in position a nut which has been advanced by the finger 13 the carriage p bein g at the same time moved backward to withdraw the finger p from the guideway 1". The rotation of the cam-wheel it now permits the spring Wto gradually draw the rotating reaming-tools Z m toward one another to engage and ream theopposite sides of the nut held between the clamping-jaws. As soon as the nut has been reamed one of the projections 10 upon the cam-wheel engages the roller 70, thus separating the reaming-tools. During the reaming operation one of the pins f carried upon the cam-wheel c has engaged the edge g of block 9 carried upon the lever 9 thus bringing the rack g to its lower position, and now as the reaming-tools are separated the edge 9 of block 9 rides upon said pin f to permit the upward movement of rack 9 thus rotating the feeding-disk h and advancin g the nuts through the guideway. The jaws c d at the same time separate and the finger p is advanced to thrust another nut in position to be engaged by the jaws and to eject the nut which has been reamed.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a nut-reaming machine, the combination with the spindles Z m, of the bell-cranks to said sleeve, sleeve n geared to shaft a, and spindle Z splined in said sleeve; substantially as described.

3. In a nut-reaming machine, the combination with pinion h, of feeding-disk h adapted to be rotated when said pinion is rotated in one direction, lever g carrying rack g adapted to engage said pinion, said lever carrying oblique walls g 9 rotating pins f f, and spring 9 substantially as described.

4. In a nut-reaming machine, the combination with a guideway over which the nuts to be reamed are passed, of clamping-jaws one upon each side of the guideway for holding the nut to be reamed, and a finger adapted to be moved across said guideway and to pass between said nuts to thrust the same forward to a position to be engaged by said clampingjaws; substantially as described.

5. In a nut-reaming machine, the combination with a feeding-plate, of a guideway leading therefrom, a feeding-board upon which the nuts are placed, situated at one side of the feeding-plate and ata greater height, the edge of the feeding-board being coextensive with the wall of the guideway so that nuts may be arranged in line against the edge of the feeding-board and advanced to the guideway; substantially as described.

6. The combination with the longitudinally moving rod carrying the tool, of the hollow spindle supporting the rod, a cap screwed to the end of said spindle and a screw engaging the end of said tool-carrying rod and eXtend-.

ing through said cap, said screw being provided with a collar adapted to rest between the end of said spindle and said cap; substantially as described.

7. In a nut-reaming machine, the combination with a guideway for conducting the nuts to the reaming-machine and terminating a short distance beyond the mechanism, of a finger moving transversely across said guideway and adapted to pass between two nuts in the guideway to advance the nut next to be reamed and to thrust a nut previously reamed from the end of the guideway; substantially as described.

In witness whereof I hereunto subscribe my name this 1st day of December, A. D. 1894.

ORLANDO P. BRIGGS. Witnesses:

DE Wrrr G. TANNER, W. CLYDE J ONES. 

